US4900296A - Articulated belt for continuously variable conical pulley, belt-drive transmission - Google Patents

Articulated belt for continuously variable conical pulley, belt-drive transmission Download PDF

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Publication number
US4900296A
US4900296A US07/290,059 US29005988A US4900296A US 4900296 A US4900296 A US 4900296A US 29005988 A US29005988 A US 29005988A US 4900296 A US4900296 A US 4900296A
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United States
Prior art keywords
link
projection
links
longitudinally
belt
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Expired - Fee Related
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US07/290,059
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English (en)
Inventor
Vinzenz Schmidt
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Ford Motor Co
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Ford Motor Co
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Filing date
Publication date
Application filed by Ford Motor Co filed Critical Ford Motor Co
Assigned to FORD MOTOR COMPANY, A CORP. OF DE reassignment FORD MOTOR COMPANY, A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: SCHMIDT, VINZENZ
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Expired - Fee Related legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G5/00—V-belts, i.e. belts of tapered cross-section
    • F16G5/16—V-belts, i.e. belts of tapered cross-section consisting of several parts
    • F16G5/18—V-belts, i.e. belts of tapered cross-section consisting of several parts in the form of links

Definitions

  • This invention relates to a belt that drivably engages conical pulleys located on parallel shafts for producing stepless variable gear ratios.
  • German patent No. 1 137 609 describes a drive belt for a continually variable belt drive transmission in which links are mutually connected forming an articulating chain and a continuous circulating drive belt.
  • This belt has the disadvantage that it requires two different forms of link members, a radially outer link, a radially inner link, joined in a hooked manner with the outer link and elements that prevent disassembly.
  • a pin is inserted through the outer surface of the radially outer link, extends through the thickness of the belt, and is fixed to a disc located at the inner surface of the inner member. Accordingly, a belt formed of links made in this way is complicated to manufacture and assemble, and its cost is high.
  • European patent No. 0 014 492 describes a drive belt that includes profiled plate-like links located with respect to one another by recesses and mating projections, and at least two flexible metal bands located in recesses formed in the plate links.
  • the bands are carriers that hold the plate members together to form a belt.
  • This belt has the disadvantage that, in order to join the plate members together to form a continuous circulating belt, highly flexible steel bands are required. These banks are difficult to produce and must be inserted into the plate links either from both sides or from the top and one side. Manufacture of these flexible steel bands is complicated and expensive.
  • An object of this invention is to provide an articulated drive belt for a continually variable transmission that requires substantially lower production and assembly, cost, uses only one form of identical link members, and requires no additional elements for holding the links of the belt in the assembled position.
  • the articulated drive belt according to this invention is formed from an assembly of identical link members without additional means to join and retain the links.
  • Each link includes a trapezoidal plate element having a planar surface on one face and a roller-shaped rib lying on the longitudinal axis of the assembled belt.
  • On the opposite face of the trapezoidal plate member from the planar surface is a planar upper surface parallel to the planar surface and a lower surface inclined with respect to the planar surface on the front face.
  • a roller-shaped channel complimentary to the rib and adapted to receive the rib within the channel, is located on the longitudinal axis of the assembled belt.
  • Each link is formed with a recess on its upper edge of the rear face of the link and a projection on the upper edge on the front face of the link.
  • the form of the recesses and projections is complimentary to facilitate nesting projections within recesses.
  • the belt is formed by transversely sliding a rib along the channel of an adjacent link. This assembly process is repeated until a continuous, endless belt is formed of links joined in this way.
  • the links can be articulated transversely to the pulling direction of the assembled belt up to the curvature limit permitted by the inclined surfaces on the lower rearward face of the links. When the belt is extended in a pulling or tension direction, the cooperating recesses and projections prevent the links from becoming disassembled due to transverse movement relative to the pulling direction.
  • One form of the links of the belt permit articulation in both directions about the longitudinal axis.
  • FIGS. 1a, 1b and 1c are a plan view, side view and front view of an element of an articulated belt according to the invention.
  • FIG. 2 is an isometric view from the side and front of an element of the drive belt.
  • FIGS. 3a, 3b an 3c are a plan view, side view and front view of a second embodiment of an element of a drive belt according to this invention.
  • FIG. 4 is an isometric view from the side and front of an element of the drive belt of FIG. 3.
  • FIG. 5 is a side view showing a number of connected elements forming a curved portion of the drive belt of FIGS. 1 and 2.
  • FIG. 6 shows a side view of a number of elements of the drive belt of FIGS. 1 and 2 with tensile load applied and the belt extending linearly.
  • a link of an articulated belt 1 includes a trapezoidal portion 2 and a rib 4 located on the longitudinal axis of the belt.
  • Surfaces 3 and 5 are planar and mutually parallel, but planar surface 6 is inclined with respect to surfaces 3 and 5.
  • Each element of the belt includes a roller-shaped channel 7 centered on the longitudinal axis of the assembled belt and located approximately in the medial plane of each link and parallel to the rib.
  • transition areas from the plane surfaces 5 and 6 to the roller-shaped channel include round fillets 8; and the transition areas between the plane surface 3 and the roller-shaped web 4 include rounded fillets 9 complimentary to fillets 8.
  • the axis of the roller-shaped channels ideally lies midway between surfaces 3 and 5 and the axis of the projecting roller-shaped rib 4 is located beyond surface 3 by half the thickness d.
  • a rectangular recess 10 located on the upper edge of each link midway between the lateral side, extends along a portion of the width of each link.
  • the cooperating roller surfaces of channels 7 and ribs 4, inclined surfaces 6, the depth of recesses 10, and the height of projections 11 are selected so that two adjacent links are fitted laterally along the roller-member connection when their plane surface 3 abuts the lower inclined surface 6 of the adjacent link.
  • recesses 10 and projections 11 lock the belt to prevent the links from sliding laterally relative to one another.
  • the elements or links of a belt according to this invention can be produced by sinter pressing, fine stamping, or profile rolling with subsequent fine stamping in an inexpensive and dimensionally accurate procedure that involves only formation of identical links, but no additional components needed to form an assembly of the links.
  • FIGS. 3 and 4 illustrate a link of the continually variable transmission that can articulate in both directions with respect to the longitudinal axis of the belt.
  • the same reference numerals have been used as in FIGS. 1 and 2 to refer to similar components except that the numerals are provided with a prime in each case.
  • the upper planar surface 5' is inclined with respect to planar surface 3' as is surface 6'.
  • the recess 10' and projection 11' are sized to permit articulation in both directions and the projections nest within recesses on the adjacent link to prevent disengagement of the links by sliding laterally, which movement would otherwise permit rib 4' becoming disengaged from channel 7'.
  • roller-shaped channels 7' and roller-shaped webs 4' may be different from a circular shape, provided that the necessary articulating operation is maintained. Also, the recesses and projections are located not only on the central axis but, where appropriate, near the lateral extremities of the links.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Belt Conveyors (AREA)
  • Transmissions By Endless Flexible Members (AREA)
US07/290,059 1988-02-19 1988-12-27 Articulated belt for continuously variable conical pulley, belt-drive transmission Expired - Fee Related US4900296A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3805182A DE3805182A1 (de) 1988-02-19 1988-02-19 Profilkoerper-gliederband fuer stufenlos regelbare kegelscheiben-umschlingungsgetriebe
DE3805182 1988-02-19

Publications (1)

Publication Number Publication Date
US4900296A true US4900296A (en) 1990-02-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US07/290,059 Expired - Fee Related US4900296A (en) 1988-02-19 1988-12-27 Articulated belt for continuously variable conical pulley, belt-drive transmission

Country Status (4)

Country Link
US (1) US4900296A (ja)
EP (1) EP0328916A2 (ja)
JP (1) JPH01275930A (ja)
DE (1) DE3805182A1 (ja)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5154675A (en) * 1990-06-05 1992-10-13 Van Doorne's Transmissie B.V. Profiled belt element
EP1070878A2 (en) 1999-07-21 2001-01-24 Tokyo Automatic Machinery Co., Ltd. Pulley thrust pressure control apparatus for belt-type continuously variable transmission
US6409620B1 (en) * 1999-07-13 2002-06-25 Honda Giken Kogyo Kabushiki Kaisha Belt for continuosly variable transmission
US6565469B1 (en) * 1999-06-18 2003-05-20 Honda Giken Kogyo Kabushiki Kaisha Belt for continuously variable transmission
US20140106919A1 (en) * 2011-05-27 2014-04-17 Kazunori Harima Driving belt and method for assembling the same
US10094446B2 (en) * 2013-06-04 2018-10-09 Honda Motor Co., Ltd. Metal belt for continuously variable transmission
US11506256B2 (en) * 2018-04-03 2022-11-22 Honda Motor Co., Ltd. Metal element for continuously variable transmission and method of manufacture the same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0621606B2 (ja) * 1986-03-28 1994-03-23 株式会社椿本チエイン 押し勝手チエ−ン
DE10222973A1 (de) * 2002-05-23 2003-12-04 Univ Karlsruhe Zugmittel in CVT-Getrieben
JP4573584B2 (ja) * 2004-07-05 2010-11-04 株式会社椿本チエイン 伝動チェーン

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1137609B (de) * 1960-08-30 1962-10-04 Reimers Getriebe K G Gliederkette fuer einen stufenlosen Kegelscheibenumschlingungstrieb
EP0014492A1 (en) * 1979-02-06 1980-08-20 Van Doorne's Transmissie B.V. A composite driving belt provided with transverse elements with coupling means, and a transverse element for a driving belt
US4473365A (en) * 1980-11-26 1984-09-25 Lapeyre James M Detachable link chain
US4729757A (en) * 1987-05-11 1988-03-08 General Motors Corporation Link elements for forming a V-belt

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1137609B (de) * 1960-08-30 1962-10-04 Reimers Getriebe K G Gliederkette fuer einen stufenlosen Kegelscheibenumschlingungstrieb
EP0014492A1 (en) * 1979-02-06 1980-08-20 Van Doorne's Transmissie B.V. A composite driving belt provided with transverse elements with coupling means, and a transverse element for a driving belt
US4473365A (en) * 1980-11-26 1984-09-25 Lapeyre James M Detachable link chain
US4729757A (en) * 1987-05-11 1988-03-08 General Motors Corporation Link elements for forming a V-belt

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5154675A (en) * 1990-06-05 1992-10-13 Van Doorne's Transmissie B.V. Profiled belt element
US6565469B1 (en) * 1999-06-18 2003-05-20 Honda Giken Kogyo Kabushiki Kaisha Belt for continuously variable transmission
US6409620B1 (en) * 1999-07-13 2002-06-25 Honda Giken Kogyo Kabushiki Kaisha Belt for continuosly variable transmission
EP1070878A2 (en) 1999-07-21 2001-01-24 Tokyo Automatic Machinery Co., Ltd. Pulley thrust pressure control apparatus for belt-type continuously variable transmission
US6383102B1 (en) 1999-07-21 2002-05-07 Tokyo Automatic Machinery Co., Ltd. Belt pressing mechanism for continuously variable transmission
US20140106919A1 (en) * 2011-05-27 2014-04-17 Kazunori Harima Driving belt and method for assembling the same
US9080639B2 (en) * 2011-05-27 2015-07-14 Toyota Jidosha Kabushiki Kaisha Driving belt and method for assembling the same
US10094446B2 (en) * 2013-06-04 2018-10-09 Honda Motor Co., Ltd. Metal belt for continuously variable transmission
US11506256B2 (en) * 2018-04-03 2022-11-22 Honda Motor Co., Ltd. Metal element for continuously variable transmission and method of manufacture the same

Also Published As

Publication number Publication date
DE3805182A1 (de) 1989-08-31
JPH01275930A (ja) 1989-11-06
EP0328916A2 (de) 1989-08-23

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Legal Events

Date Code Title Description
AS Assignment

Owner name: FORD MOTOR COMPANY, A CORP. OF DE, MICHIGAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SCHMIDT, VINZENZ;REEL/FRAME:005069/0613

Effective date: 19890119

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
FP Lapsed due to failure to pay maintenance fee

Effective date: 19940213

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362